Fuel tank



June 2l 1921. 1,633,062

S. J. BENS FUEL TANK Orgilial Filed Feb. 4, 1925 I 14 13 1316' Invenor:

` Samuel JY Beas,

' AtyJ'.

Patented June 21, 1927.

UNITED STATES l 1,633,062 PATENT ortica.

sanzioni. I. sans, or NEW YORK, N. Y.

, FUEL TANK.

Application tiled February 4, 192,5, Serial No. 6,815. Renewed November 16, 192,5..

My present invention relates to a fuel` tank for use with devices which in the course of their use, are required to he rotated through an angle oat 9010 or less, and has a particular adaptation to the fuel tank as applied to the mechanism of the engine used with a power driven chain savv.

It is common knowledge that Where an engine is to be supplied with fuel from a tank, is and both tank and engine are subjected to rotation during operation, the feed of the fuel tothe carburetor or other mixing dcvice, is uneven which causes irregular and unsatisfactory operation.

My invention has for its principal object to remedy the above defects, and further to provide a tank in which the liquid is main tainedat a nearlypconstant level, and will operate with equal eiiciency at any position Within an arc .of 90, and also in the provision of a constant level attachment which will operate with equal efficiency at any position in this angular limitation;

Further objects and advantages will be F brought out asthe specification proceeds.

To this end my invention includes a supply tank of substantially rectangular shape in which one of its diagonals is arl ranged normally in a vertical position so that one corner of the tank maintains a minimum low position throughout the rotation of 90o kin the plane of the tank. The invention further consists in the provision of a constant level attachment whereby air is ad mittcd to that portion of the tank above the liquid level, which thus allows the liquid to feed through the tank exit to the carburetor, or other attachment, in a novel and useful manner. The invention further consists in the construction, combination, and arrangement of parts, hereinatter described, and particularly pointed out inthe claims.

I have 'illustrated in the aoCQIllPUlyDg drawings, the preferred form of .my inven- "H" tion, although :it s tobe understood that this is merely exemplary of .the principle involved," and 1 doy not ,to .he 'limited strictly thereto.

In these drawings Fivnre lis a. sid" elevation of @Mull-. em-

bodying iny`.invention.

Fig. 2 is a fragmentary sectional elevation of the. valve and associated mechanism of the tank of Fig. 1.

Fig. 3 is a view similar to Fig. 2 at an angle of 90l thereto.

. @ansteht Figa. a fragmentary sectional elevation of the filler cap and air relief valve ofthe tank @t Fis'- ll i i' Referring now more particularly to the form illustrated, I have shoivn main snpply tank at 1 ot substantially rectangular configuration which may he of any desired thickness .or depth consistent xvith the purposes to `which the tank is pnt and the ,capacity desired. A filler oriiice 2 is providedfat the upper portion ,of thel tank which is further provided with a threaded cap @l which compresses a Washer 4 so that an air tight niet may be made At the l-ovver corner of the tank 1, when arranged in a position sol that o ne of the diagonals thereof `is in substantially vertical position.j l provid@ Casting 5 .feed in any suitable manner thereto. To the casting iS affixed regulating ,mechanism 6 as4 by means of bolts 7 with a gasket interposed between the parts() and (i inordcr to insure :i tight ininttherebetween The ycasting is provided with an aperture l 9 which .forms the for the fuel vvithin the l. This aperture 9 is covoif'ed by a screen 1,0 held between the parts and 6 so the fuel in feeding through the exit, is Filtered or strained of any eXtraneous material.'

1n thel Afixture 6 is provided a ,chamber 11. which I shall term L ,toed chamber. This is provided `with a port 12 ivhich communicates ivitli ports I1?.) viny a rotatable ,valve 14 lprovided with 4a handle 15, which alleys communication between 19.01112 ,ii-.11d the @Denies t6' leeds t0 the Carburetor O1' Other SiitfilQl-. devies!" .The aan .1.6 11O- vvided vt-li .enlargement ,17Y ,into wich be A,tln'eafded ani'p le 18 or other suit able fixture, ,irclimis ences will' .dictate i chamber 19 is also formed inthe fixture 6 and which Ishall terni the constant level ,c hamber, ,closed the plate lQ() bolted if .413 @tbv @ther Suitable means t0 tie itllltf; ifi provided with v,a gasket 22 in .Order tOi ser-ee tlsht'ieint therewith. The l eyel chamber lisl'lalso provided site@ Pof-.ff 23 ivh'll Cemmimaf-svth .the poi-i 11,3 ad @meer if .12- 'n wir alivio-lie that .Een the valve l sin 39119D051- tioniiidic'ate `in`Fi`g- 3," communication between the said chamber 11 and the constant level chamber 19 Will be permitted, but when the valve 14: is rotated at an angle of in either direction, communication between the ports 12 and 23 is prevented by reason ofthe fact that the solid portion of the valve 14 abuts the `lower part of the wall 24 and effectively cuts off communication between these ports.

From the constant level chamber 19 rises an air tube 25 in substantial alignment with the verticaldiagonal of the tank 1, the upper portion of the air pipe 25 terminating within an extension 26 at the top corner of the tank so that the end of the pipe and the pipes periphery is spaced from the inner wall of the extension 26.

In the plate 20 which' is secured to the fixture 6, I also provide a short length of pipe 27 which allows communication between the outside air andthe constant level chainyber 19, all for a purpose to be more fully described hereinafter. f

The `operation "of the ldevice is as follows zi The tank 1 having been filled through theV opening at its upper portion, and the cap 3 having been screwed down against the gasket 4 so as to form an air tight joint, it will be apparent that the fuelV in the tank 1 will feed down through the aperture 9 filling the chamber 11,` passing through the ports'12 and 23, and rising in the chamber 19 until it reach-es a level indicated by the line A. The fuel also passes through the port 13`in the valve 14 and the passage 16 and fixture 18 to the carburetor, so that fuel is available for that part of the mechanism as soon as the engine or other ymeans is started.

Inasinuch as the cap 3 forms an air tight connection with the part 2 it will be apparent that no further feeding of fuel through the aperture 9 willbe possible until air is allowed to enter the tank above the level of fuel therein. This is taken care of by reason of the fact that as the carburetor uses the fuel passing to it through the fixture 18, the

level indicated at A in the constant level chamber 19 will lower which will expose the lower end of the pipe 25 so that outside air may pass down through the pipe 27 and up the pipe 25 relieving the vacuum above the upper level of the liquid in the tank 1, which allows enough fuel to exit through the aperture 9 until the level A has been reached again so as to close the'bottom of the pipe 25. It will be apparent therefore, that fuel` will only feedfrom the tank as long as and as fast as it is required by the carburetor,

It will also be apparent that I have provided a tank which may be operated from an inclination where one side next the feed fixture is horizontal to` the point whenthe adjacent side next to the fixture is horizontal ing `pipes 27 and 25, the feed and pressure Y of the fuel remains constant and regular so that the usual objectionable irregular feeding is prevented. p

Having thus described my invention, what I claim is -1. A fuel tank substantially rectangular in cross section, and having one of its diagonals Varranged vertically, a feed fixture aflixed to the lower corner `of said tank, in-

cluding a constant level chamber, and means to admit air to the top of the tank above the liquid level controlled from' said constant level chamber. i

2. A` fuel tank substantiall rectangular in Vcross section and arrange with one of its diagonals in a vertical position, a feed `fixture affixed to the lower corner of said tank, a feed chamber in said fixture, a con-` stant level chamber in said fixture, hollow means extending from said constant level fixture to the space above the level of the liquid in said tank, a port allowing communication between the'feed chamber and the constant level chamber, and means -to close said port. p f i 3. A fueltank substantially rect-angular in cross section" and having one of'its diagonals` arranged in a vertical position, a

feed fixture securedto theflowerV corner of in" said tank, a feed chamber communicating 3 by a port to aconstant level chamber, a tube allowing communication between 'said constant level chamber and the space above the fuel level "intlietank, said constant levelV cliainberalso being vented to the outside air, and a port from' the feedchamber toa point outside said feed fixture.

4. Affuel tank having afeed fixture secured to the lowest oint thereof, a feed chamber within said xture, aconstantv level chamber within said1 fixture, a fvalved port connecting the two chambers, an air feed tube extending from the lconstant level chamber to the space above the level of the fuel in the tank, the lower end of said tube being normally closed by the level of liquid# in the constant level chamber, and a vent extending fronr above the normal level of liquid in the constant level chamber to the outside air, and a common exit for fuel from said constant level and feedV chambers through said port.

" In testimony whereof I affix `my signature.

' SAMUEL` J. BENS.V 

